They are strongly sexually dimorphic, as usual with the males being brighter. Parts of the female plumageis brown or grey. These largely solitary birds feed on fruits, berries, insects and small vertebrates (such as frogs). Even with their famous bright plumage, they can be hard to see in their natural wooded habitats.

In Aztec times, the quetzal was worshiped as the god of the air. Its long tail feathers, which can grow up to 2 ft (60 cm) long, were highly prized for making into costume and head-dresses.[2]